參數資料
型號： MAX1403EVKIT
廠商： Maxim Integrated Products
文件頁數： 11/36頁
文件大?。?/td> 0K
描述： EVAL KIT FOR MAX1403
產品培訓模塊： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標準包裝： 1
ADC 的數量： 1
位數： 18
采樣率（每秒）： 480
數據接口： 串行
輸入范圍： ±VREF/增益
在以下條件下的電源（標準）： 16.9mW @ 480SPS
工作溫度： 0°C ~ 70°C
已用 IC / 零件： MAX1403
已供物品： 板，CD
MAX1403
+3V, 18-Bit, Low-Power, Multichannel,
Oversampling (Sigma-Delta) ADC
______________________________________________________________________________________
19
Analog Inputs AIN1 to AIN6
Inputs AIN1 and AIN2 map to transfer-function register
1, regardless of scanning mode (SCAN = 1) or single-
ended vs. differential (DIFF) modes. Likewise, AIN3 and
AIN4 inputs always map to transfer-function register 2.
Finally, AIN5 always maps to transfer-function register 3
(input AIN6 is analog common).
CALGAIN and CALOFF
When not in scan mode (SCAN = 0), A1 and A0 select
which transfer function applies to CALGAIN and
CALOFF. In scan mode (SCAN = 1), CALGAIN and
CALOFF are always mapped to transfer-function regis-
ter 3. Note that when scanning while M1
≠ M0, the scan
sequence includes both CALGAIN and CALOFF chan-
nels (Table 4). CALOFF always precedes CALGAIN,
even though both channels share the same channel ID
tag (Table 11).
Note that changing the status of any active channel
control bits will cause INT to immediately transition high
and the modulator/filter to be reset. INT will reassert
after the appropriate digital-filter settling time. The con-
trol settings of the inactive channels may be changed
freely without affecting the status of INT or causing the
filter/modulator to be reset.
PGA Gain
Bits G2–G0 control the PGA gain according to Table 6.
Unipolar/Bipolar Mode
The U/B bit places the channel in either bipolar or
unipolar mode. A 0 selects bipolar mode, and a 1
selects unipolar mode. This bit does not affect the ana-
log-signal conditioning. The modulator always accepts
bipolar inputs and produces a bitstream with 50%
ones-density when the selected inputs are at the same
potential. This bit controls the processing of the digital-
filter output, such that the available output bits are
mapped to the correct output range. Note that U/B
must be set before a conversion is performed; it will not
affect any data already held in the output register.
Selecting bipolar mode does not imply that any input
may be taken below AGND. It simply changes the gain
and offset of the part. All inputs must remain within their
specified operating voltage range.
Offset-Correction DACs
Bits D3–D0 control the offset-correction DAC. The DAC
range depends on the PGA gain setting and is
expressed as a percentage of the available full-scale
input range (Table 7).
D3 is a sign bit, and D2–D0 represent the DAC magni-
tude. Note that when a DAC value of 0000 is pro-
grammed (the default), the DAC is disconnected from
the modulator inputs. This prevents the DAC from
degrading noise performance when offset correction is
not required.
Transfer-Function Register Mapping
Tables 8, 9, and 10 show the channel-control register
mapping in the various operating modes.
Table 6. PGA Gain Codes
Table 7. DAC Code vs. DAC Value
0
G1
0
G0
0
1
x2
0
1
0
1
x8
0
x4
x1
0
1
x32
1
0
1
x128
1
x64
x16
1
G2
PGA GAIN
-66.7
-100
-116.7
-83.3
+66.7
+100
+116.7
UNIPOLAR
DAC VALUE
(% of FSR)
+83.3
DAC not connected
-33.3
-50
-16.7
DAC not connected
+33.3
+50
+16.7
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
D0
0
1
-33.3
-50
1
-58.3
1
-41.6
0
1
0
1
0
+33.3
+50
0
+58.3
1
0
+41.6
0
1
0
1
BIPOLAR
DAC VALUE
(% of FSR)
D3
1
-16.7
1
-25
1
0
1
0
1
-8.3
0
+16.7
0
+25
1
0
1
0
+8.3
0
D1
0
D2
0
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相關代理商/技術參數
參數描述
MAX1403EVL11 功能描述:數據轉換 IC 開發(fā)工具 MAX1403 Eval Kit RoHS:否 制造商:Texas Instruments 產品:Demonstration Kits 類型:ADC 工具用于評估:ADS130E08 接口類型:SPI 工作電源電壓:- 6 V to + 6 V
MAX1403EVSYSTEM 制造商:Maxim Integrated Products 功能描述:EVALUATION SYSTEM FOR THE MAX1403 - Boxed Product (Development Kits)
MAX1406C/D 功能描述:RS-232接口集成電路 RoHS:否 制造商:Exar 數據速率:52 Mbps 工作電源電壓:5 V 電源電流:300 mA 工作溫度范圍:- 40 C to + 85 C 安裝風格:SMD/SMT 封裝 / 箱體:LQFP-100 封裝:
MAX1406CAE 功能描述:RS-232接口集成電路 RoHS:否 制造商:Exar 數據速率:52 Mbps 工作電源電壓:5 V 電源電流:300 mA 工作溫度范圍:- 40 C to + 85 C 安裝風格:SMD/SMT 封裝 / 箱體:LQFP-100 封裝:
MAX1406CAE+ 功能描述:RS-232接口集成電路 15kV ESD-Protected 230kbps RS-232 LD/Rc RoHS:否 制造商:Exar 數據速率:52 Mbps 工作電源電壓:5 V 電源電流:300 mA 工作溫度范圍:- 40 C to + 85 C 安裝風格:SMD/SMT 封裝 / 箱體:LQFP-100 封裝:
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